140 
SYSTEMATIC LIST AND SYNONYMY. 
OPHIDI A—Continued. 
1859, P. R. R. Rep., X, pl. 36, f. 3; Coop., 1860, P. R. R. Rep., XTi 
(2), 296; Yarr., 1875, Wheel. Rep., V, 550; Coues & Yarr., 1875, 
Hayd. Rep., 1V, 281. Trop. sirtalis var. Jan, 1863, Sist, 69, — 1865, 
Arch, Zool., 211. Eutaenia cooperi Kenn., 1859, Pr. Phil. Ac.; Coop., 
1860, P. R. R. Rep., XII (2), 296; Yarr., 1875, Wheel. Rep., V, 551. 
Trop. sirtalis var. cooperi Jan, 1863, Sist., 69, — 1865, Arch. Zodl., 212. 
Eutaenia elegans B. & G., 1853, Serp., 34; (Kenn.) Bd., 1859, P. R. R. 
Rep., X, Rept., 10; Yarr., 1875, Wheel. Rep., V, 549. Trop. elegans 
Jan, 1863, Sist., 70, — 1865, Arch. ZoGl., 214. E. cyrtopsis Kenn., 1860, 
Pr. Phil. Ac., 333; Cope, 1866, Pr. Phil. Ac., 806; Yarr., 1875, Wheel. 
Rep., V, 550; Cope, 1880, Bull. 20, U. S. Mus., 28. Thamnophis cyr- 
lopsis var. eyclides Cope, 1860, Pr. Phil. Ac., 299. E. ordinoides B. & G., 
1853, Serp., 33; Grd., 1858, Expl. Exp., Herp., 153, pl. 14, f. 1-4; Bd., 
1859, P. R. R. Rep., X, pl. 26, f. 3.; Yarr., 1875, Wheel. Rep. V, 548. 
Tropidonotus ordinoides B. & G., 1852, Pr. Phil. Ac., 176. T. sirtalis 
var. ordinoides Jan, 1863, Sist., 69, — 1865, Arch. Zodl., 211. Trop. 
concinnus Hall., 1852, Pr. Phil. Ac., 182. ut. concinna B. & G., 1853, 
Serp., 146; Bd., 1859, P. R. R. Rep., X, Rept., 10; Coop., 1860, P. R. 
R. Rep., XII (2), 298; Yarr., 1875, Wheel. Rep., V, 549. E. ham- 
mondi Kenn., 1860, Pr. Phil. Ac., 332; Yarr., 1875; Wheel. Rep., V, 
549. Trop. hammondi Jan, 1863, Sist., 70, — 1865, Arch. Zo6l., 215. 
Eutaenia atrata (Kenn.) Coop., 1860, P. R. R. Rep., XII (2), 296; 
Yarr., 1875, Wheel. Rep., V, 551. Trop. sauritus var. Jan, 1863, 
Sist., 70, — 1865, Arch. Zoél. But. swmichrasti Cope, 1866, Pr. Phil. 
Ac., 306; Yarr., 1875, Wheel. Rep., V, 547. Thamnophis scalaris 
Cope, 1860, Pr. Phil. Ac., 369. Eutaenia scalaris Cope, 1866, Pr. Phil. 
Ac., 306; Yarr., 1875, Wheel. Rep., V, 549. Eutaenia phenax Cope, 
1868, Pr. Ac. Phil., 154; Yarr., 1875, Wheel. Rep., V, 549. (?) Trop. 
scaliger Jan, 1863, Sist., 70. (?) Trop. glaphyros Jan, 1863, Sist., 70. 
T. ruficeps Peters, 1869, Mb. Brl. Akad., 877. 
California to Mexico. 
War QUADRISERTATIS-EsMicnicyne erence) Sc ae aoe a eae ; 
Labials 8. Infralabials 10. Orbitals 1—8. Seales in 19 rows, 
keeled. Ventrals 149. Anal bifid. Subcaudals 79 pairs. Oliva- 
ceous, with four rows of small black spots. 
Mazatlan, Mexico. 
(Neropra.) 
TROPIDONOTUS SIPEDON (Water Snake) .> . . .-. « «= =». «= ewe 
Coluber sipedon Linn., 1758, Syst., I, 219, — 1766, Syst., I, 379; Gmel., 
1788, Syst. Nat. Linn., I, 1098; Shaw, 1802, Zool., III, 496; Merr., j 
1820, Syst., 124; Harl., 1827, Jour. Phil. Ac., 351, — 1835, Med. Res., 
114; Storer, 1839, Rept. Mass., 228; Thompson, 1842, Hist. Vermont, 
118. Tropidonotus sipedon Volbr., 1842, Herp., IV, 29, pl. VI; Dum. 
Bibr., 1854, Erp., VII, 568. Nerodia sipedon B. & G., 1853, Serp., 38 
Baird, 1854, N. Y. Serp., 16, — 1859, P. R. R. Rop., 3, pl. 27, £.2% 
